Sleep Disorder

Stages of Sleep

If you have a sleep disorder, it is important to understand what is going on with your body when you close your eyes. There are many stages of sleep, most of which the majority of people don't understand.

Non-REM Sleep

Also known as NREM sleep, there are four stages. Each state can last anywhere from 5 to 15 minutes. Before you are able to reach REM sleep, you must progress through the four stages of NREM. These include:

• Stage 1: during this stage of sleep the eyes are closed, however, a person can be easily awakened if startled. This stage typically lasts for 5 to 10 minutes.
• Stage 2: during this period of light sleep polysomnographic readings show a variety of positive and negative waves. The body temperature begins to decrease along with the heart rate.
• Stages 3 and 4: Known as deep sleep stages, a person who is awakened during this time may be groggy for several minutes.

It is during stages 3 and 4 of NREM sleep that the body repairs tissues, builds muscle and bone, and strengthens its immune system.

REM Sleep

Typically, REM sleep occurs approximately 90 minutes after first falling asleep. The first period of REM lasts roughly 10 minutes, with each stage after that lengthening to as long as an hour.

It is during REM sleep that dreams occur.

Do you have a Sleep Disorder?

Anybody who suffers from a sleep disorder may find that their sleep cycle is disrupted from time to time. Subsequently, it can a challenge to sleep through the night. Even when this does happen, the person may awake feeling like they did not get enough sleep.

By understanding the many stages of sleep you can get a better idea of what happens with your body during this time period. If you believe you have a sleeping disorder, it is important to consult with a medical professional as soon as possible. This will allow you to receive the appropriate treatment, leading to a better night's sleep in the future.